I just purchased an HP 23" LED IPS monitor for $199, and they even gave me a $15 credit since I called and asked "any specials?". Both those monitors are nice but an IPS monitor will blow either one of those away.
actually the asus vs series is so near the quality of an ips panel that its not even really distinguishable. i was surprised that tn panel would have such good viewing angles and such a good picture
I have the vs248 and it is not ips quality. But it is really good for a tn. You must not have used a good ips monitor. I can't find a proper review of the samsung so I can't really say for sure. But I don't think you can go wrong with either looking as similar samsung model reviews.
Huge +1 here for buying an IPS panel monitor. I actually stuck with a big old CRT until I got IPS. I purchased several TN panels before my IPS but returned them all because I couldn't accept the loss of colour quality/accuracy compared to my CRT (it was a nice CRT though!).